The Thrice-Damned House of Thrune wants to seal the Inferno Gate, an uncontrolled portal to Hell, and the nefarious player characters are tapped to accomplish the task. To perform the required ritual, they must acquire key components held by a hellspawn thieves' guild and the Hellknight Order of the Pike, as well as battle angelic foes and the knights of the Glorious Reclamation. But before they can complete the ritual, the characters face betrayal at the hands of one of their closest allies. Will the villains defeat this traitor in their midst and close the gate to Hell-or better yet, make a deal with a devil for control of the portal-or will they become sacrifices to the Inferno Gate? The Inferno Gate is a Pathfinder Roleplaying Game adventure for 7th-level characters.